Case variations of 'ans' aren't shown in Variables dock.

[Former user]

Originally reported on Google Code with ID 390

Just some minor issues:

1. The built-in "ans" variable is not shown in the "Variables" pane.  It should be,
just like any other variable.  Then the user could still see what its value is when
they have scrolled back in the history, without having to scroll forward again.

2. If you create a variable called "ANS", this isn't shown in the "Variables" pane
either.  This is a bug ;)

3. On the "Edit" menu, "Delete variable", "Delete all variables" and "Insert variable"
all ignore the built in "ans" variable.  (It might make sense when "Deleting" ans to
set it = 0).

Reported by Alister.Hood on 2011-10-15 14:16:30

[Former user]

``` I would agree with the second point. Since you are able to create ANS, it should be in the variable list (same goes for E, PI, and PHI). I know its probably not normal to use them variables. I might see if my fix works and if agreed, I would like to submit. ```

Reported by `eckorog2005` on 2012-03-14 01:30:02

[Former user]

The bug described in 2) has been fixed at some point since this was reported.
I don't agree with 3) as ans is a special entity. Those deletion operations don't and
shouldn't apply to ans, a non-user variable.
I sort of see your point with 1) but I don't consider it strong enough (see above).
I may change my mind in the future and deal with the added implementation complexity
though.
I'm marking this as fixed based on 2).

Reported by helder.pereira.correia on 2013-12-30 03:23:02 - Status changed: Fixed - Labels added: Type-Defect, OpSys-All, Priority-Medium, Milestone-0.11, Component-UI, Usability